Organization owners can change the parent of any team. Team maintainers can change a team's parent if they are maintainers in both the child team and the parent team. Team maintainers without maintainer permissions in the child team can request to add a parent or child team. For more information, see "Requesting to add or change a parent team" and "Requesting to add a child team."
Child teams inherit the access permissions of the parent team. For more information on team hierarchies, see "About teams."
Tips:
- You cannot change a team's parent to a secret team. For more information, see "About teams."
- You cannot nest a parent team beneath one of its child teams.
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In the upper-right corner of GitHub Enterprise Server, select your profile photo, then click Your organizations.  
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Click the name of your organization. 
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Under your organization name, click Teams.  
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In the list of teams, click the name of the team whose parent you'd like to change. 
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At the top of the team page, click Settings.  
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Under "Parent team", select the Select a parent team dropdown menu and either click a parent team, or, to remove an existing parent, click Clear selected value. 
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Click Update. 
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Read about the changed repository access permissions. 
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Click Confirm new parent team.